Aparatul electronic muzical se manevreaza usor, are gabarit redus, poseda si avantajul ca sunetele sint produse prin simpla apasare de butoane. Muzicuta electronica, separat, poate fi folosita ca amplificator de ghitara sau ca amplificator de picup.
Muzicuta electronica este compusa din trei parti distincte:
— amplificatorul de audiofrecventa;
— oscilatorul “Vibrato ;”
— generatorul de semnal, care genereaza o oscilatie sinusoidala cu frecventa de 5—15 Hz, reglabila prin portentiometrul 10 K.
Pentru producerea frecventelor muzicale s-a ales sistemul de conectare a capacitatilor CI-C15 in serie, (tandeu) deoarece sistemul prezinta o simplitate mai mare de montare.
Inchiderea butonului KI corespunde introducerii in circuitul bazei tranzistorului a condensatorului C1 de 22 nF; fiind cea mai mare capacitate, frecventa generata va fi cea mai mica (sunetul cel mai jos). inchiderea butonului K2, introduce in circuitul bazei seria dintre cele doua condensatoare CI si C2, care este echivalenta cu jumatate din capacitatea C1 si ca atare, frecventa oscilatiilor va duce la cresterea sunetului in inaltime.
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